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NEET levelSingle correct optionDifficulty 1 of 3ss185

Which of the following crystals is expected to show Frenkel defects?

A $NaCl$
B $AgBr$
C $CsCl$
D $KCl$

Answer: B

Frenkel defects occur when the cation is much smaller than the anion and the coordination number is low.

Ag X^{+}

is small and can move to an interstitial site.

NaCl

,

KCl

and

CsCl

have similar-sized ions and show Schottky defects.

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